Disconnect, a U.S. firm that designs privacy-enhancing technology, has filed a complaint with European antitrust regulators after its Android app was banned from the Google Play Store. The app was designed to protect smartphone users from invisible tracking and malware distributed through online advertisements.

The complaint was submitted earlier this month, but the full allegations were not made public at the time. The Intercept has obtained a copy of the 104-page complaint, which attacks Google over its claimed commitment to privacy and accuses the tech titan of trying to stop people from using the Disconnect app because it poses an “existential threat” to its revenue sources.

Google’s business, the complaint claims, “consists almost entirely of gathering data about the preferences, locations, and behavior of ordinary people and monetizing that data through the sale of targeted advertisements on the Internet.” Because of this, it alleges, Google is “using the full weight of its market power to deny users control over tracking, particularly mobile tracking.”